Canon EF 200-400mm f/4L IS USM Extender 1.4x

Designed for Canons leading range of EOS Digital SLR cameras, the new lens will be an ideal addition for sports and wildlife photographers, offering exceptional flexibility with a built-in 1.4x extender that creates an increased focal range of 280 560mm.
Perfect for photographers who require high performance, fast aperture and a flexible telephoto range, the EF 200-400mm f/4L IS USM EXTENDER 1.4 will enable photographers to shoot a greater breadth of subjects using a single lens, delivering the best possible image quality at all focal lengths.